Steam-pipe shield.



Ml SANDERS.

' STEAM PIPE SHIELD.

' APPLIGATION F1LED,APR.11, 1912.

1,039,818. Patented 0ct.1,1912.

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Manton semanas, oF FoFLan BLUFF, MissoUnI, ASSIGNOR oF oan-HALF 'ro aus LYNCH, oF Fernen BLUFF, MISSoUnr. Y

sTFAM-FIFF SHIELD.

Specification or Letters Patent.

' Application led April 11, 1912. Serial No..689,962.

' residing at Foplar Bluff, in the colnty. of

Butler and State of Missouri, have invented' a newnnd Improved Steam-Pipe Shield, of which the following is a speciticatlon.

This invention, while relating generally to superheating appliances for locomotive' boilers, more particularly is in the nature of a shield or protecting'meansy for; thereturn ends of the superheating in the boiler tubes.

The return bends employed for joining the ends of the superheating steam pipes in locomotive boilers,"usually present approximately Hat surfaces to the incoming riames or gases which, in contacting with the said return bend of the steam pipes, causethe gathering of accumulation of solids Aor clinlter stuff, and frequently to'such an eX- tent that the lire tubes become clogged and the return bends are burned out and destroyed. .f I

My invent-ion has for its object to over come the aforesaid diiiculty in theusing of superheating appliances for locomotive boilers by providing a shield mountable on .the return ends of the steam4 pipesfand in such a manner that the said ends are'thoroughly protected, not alone against the gathering of clinker accumulations, but so as to aid the solids in their passage over and by the said return bends. D

My invention also has for its object to provide a simple, economical and easily ap# plied shield or protector for the steam pipe bends that effectivelyserves its intended purposes, and the said invention consists in the means hereinafter fully described,spe cifically pointed out in the appended claims, and reference -being had to the accompanying drawings, in which:-

Figure 1 is a longitudinal section of a locomotive boiler. tube and a set of superheating pipes combined therewith' and whose return bends 'are equlpped .with `my improved shield or protectmg means, the latter being shown in elevation. Fig'. 2 is a longll, tudinal section of the lire end vof a boiler tube' having superheating pipes with the preferred or simplest form of my shield or protector applied. Fig. 3 is a horizontal sectin of the same on the line 3 3 of Fig. 2. Fig. 4 is a detail perspective view of the pipes located with-y return bend or coupling head for a pair of steam pipes, and.4 my improved shield, the

latter being shown Separated from the said head. Fig. 5 is a detail view that illustrates a modified form of myshield or protector, and Fig. 6y is a side elevationof the same.

In its simplest form, my improvement is' Patented oet. 1, i912.

the usual arrangements of superheater steam pipes. located within boiler tubes.

In the drawing, 1 designates a boiler tubey with the nigger head endbf-fthe boiler,

and Whose bends or loops `11 extend to lnear the'firing-end of the tube l.

"My invention vrelates entirely to 'improvements applicable tothe return bend or ,loop end of the superheating p' es,`and in its simplest form as shownl in igs.- 1, 2, lSand 4, it comprisesaishield 5"-that includes a head portion 50, having ,aflat face of a Width'not more than thef'diameter-of the bend, and provided with a".,substantially semi-circular groove or seatjl, to permitof snugly slipping the head onto the bend 41. The body of the shield is solidl and is made substantially conical', whereby the'said ,body from the fiat bend faces ofthe head `and from the edges 53 thereof, .tapers toa sharp shape` not. alone assists the pas'singof the.

combustion products overj'thelbend and be- .yond --it,v but poSit-ively deiectsthe clinkery ous deposits from seating or lodging on the bend41. ,t In fitting my .shield onto the bend 41, it is preferably dtachably mounted thereon,

for readily removing itin case it becomes dev fective, for itsintended purposes. 4 i' l. .In the simplest form, as shown in Figs. 1

to the 'return bend 4l has a centrally ,d-isf posed heel lug 4:5 and the eoncaveriseat invv the head of the shield has-a oernespondin socket 55,-it being obvious that when place onto the/bend 41 cld, the shield will firmly A grip the'stud and the bend as Vit expands.

^ In Fi s. 5 and 6 Ihave shown a somewhat modifie form of my', shield and the same instead of having a socket 55, is provided-with v can be used on parallel lingers 56, having convexed heel This latter or modified form bends having no central lugs 45, since the vfinger portions 56 can be sprung over the return bend far enough to engage With the grooves between the parallel ends of the said bend. This last stated formof shield can be removed from time to time Without affecting the superheater pipes or the return bend. y y f l One of the advantages in making my portions, 57.

shield as stated, is, that since the thickest portion thereof ispractically not more than the 4diameter of the bend, and the greatest width thereof is somewhat less than the i width of the bend, it follows that the said i shield does .11ct, in if area of the ldraft on the ends and over the bend, and a socket, the said outer end of the Uopies of thispatent may be obtained for ve cents: each, by

cludmg a spear-like return bend having a `lug for engaging with the said socket.

2. A protectingshield for the return bends of superheating steam pipes, comprising a cone-shaped body that includes a head ortion of not greater thickness and width than that ofthe return bend to which it is applied, the said head portion of the shield having a concaved seat for receiving the outer end of the return bend and a socket, the said outer end of the return bend having a lug for engaging with the socket.

8. LA shield for the return bends of superheating steam pipes in boiler tubes, comprising a substantially conical shaped body insolid head having meansv for fitting onto the outer end of the return end of the return bend of thc pipe, and for removably holding it on said bend, said means. .including resilient members adapted to be sprungover the return bend for 'engaging with .the grooves between tht parallel 'ends of Said bend, said spear-like head tapering from said return bend and ex" tending a distance beyond the same greater than the length of the bend.

MARION SANDERS.

Witnesses:

WM. MOHNKERN.l J. P. GRoss.

addressing the Commissioner of Patents,

Washington, D. C. N 

